NCC Question 21
Question 21: What sort of Redeemer is needed to bring us back to God?
Answer: One who is truly human and also truly God.
As you read the OT, two things become clear: 1.) God's salvation will come through a man, and 2.) God himself must save his people. A divine-human Redeemer is anticipated in the OT and realized in Jesus Christ, the eternal Word made flesh.
Augustine of Hippo comments:
"He who existed as the Son of God before all ages, without a beginning, deigned to become the Son of Man in these recent years. He did this although He who submitted to such great evils for our sake had done no evil and although we, who were the recipients of so much good at His hands, had done nothing to merit these benefits. Begotten by the Father, He was not made by the Father; He was made Man in the Mother whom He Himself had made, so that He might exist here for a while, sprung from her who could never and nowhere have existed except through His power."